primary containment

例句：

1. 1. The team decided to implement a primary containment strategy for the outbreak.
   该团队决定为疫情实施初级隔离策略。
2. 2.The primary containment measures were effective in preventing further spread of the virus.
   初步的隔离措施有效地阻止了病毒的进一步传播。
3. 3.In the event of an emergency, the primary containment area should be designated and secured immediately.
   在紧急情况下，应立即指定并确保安全区。